well, i found all cards that should have rt2500 'onboard' - it might be of some use for others - go to the following link...Other than that, you could use cards that use the Ralink RT2500 chipset (e.g. MSI CB54G2, ASUS wifi cards, etc). The good thing about these is that these don't require any firmware. You just download the GPL'd rt2500 drivers.
http://ralink.rapla.net/ i'll probably gor for asus wl107g...also the following intel cards seem to be promising (if they're available as PCMCIA)...
Intel PRO/Wireless LAN 2200BG Mini-PCI/PC-CARD Intel PRO/Wireless LAN 2915ABG Mini-PCI/PC-CARD regards, -- Lubos _@_"